[IEEE IEEE MTT/ED/AP/LEO Societies Joint Chapter United Kingdom and Republic of Ireland Section. 1997 Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications EDMO - London, UK (24-25 Nov. 1997)] IEEE MTT/ED/AP/LEO Societies Joint Chapter United Kingdom and Republic of Ireland Section. 1997 Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications. EDMO (Cat. No.97TH8305) - Analysis of the frequency dispersion of the transconductance in recessed and unrecessed low temperature GaAs FETs